package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {
    @Autowired
    DishService dishService;
    @Autowired
    SetmealService setmealService;

    @Override
    @Transactional
    public void remove(Long id) {
        LambdaQueryWrapper<Dish> qw = new LambdaQueryWrapper<>();
        qw.eq(Dish::getCategoryId,id);
        int count = dishService.count(qw);
        if (count>0){
            throw new CustomException("当前分类下关联了菜品，不能删除");
        }

        LambdaQueryWrapper<Setmeal> qw1 = new LambdaQueryWrapper<>();
        qw1.eq(Setmeal::getCategoryId,id);
        int count1 = setmealService.count(qw1);
        if (count1>0){
            throw new CustomException("当前分类下关联了套餐，不能删除");
        }

        super.removeById(id);

    }
}
